Cry Wolf is the 21st produced, and the 18th broadcast, episode of the British television series Thunderbirds.
Young brothers Bob and Tony Williams, accidentally summon International Rescue when they call for help while playing a IR based game with each other. The team tells them that false alarms dangerously interfere with people's lives and they should switch off their radios so as not to cause any more misunderstandings.
However, this time their lives really are in danger when IR's arch-enemy the Hood returns with another villainous scheme and when they call for help, IR considers it to be another false alarm.
Will International Rescue believe how serious the situation really is and save them in time?
Cry Wolf on Thunderbirds Wiki: